Title :
Motion video coding in CCITT SG XV-the video source coding
Author :
Plompen, Ronald ; Hatori, Yoshinori ; Geuen, Wilfried ; Guichard, Jacques ; Guglielmo, Mario ; Brusewitz, Harald
Author_Institution :
Dr. Neher Lab., Leidschendam, Netherlands
fDate :
28 Nov-1 Dec 1988
Abstract :
A description is given of studies of source coding in the specialists group on coding for visual telephony in CCITT SG XV. Using a macro block approach, the source coding algorithm will have the capability of operating from 64 kb/s for videophone applications up to 2 Mb/s for high-quality videoconferencing applications. The authors describe the existing reference model and the evolution toward the latest reference model (RM5), which is going to be submitted for standardization. Theoretical information is provided and some examples for possible improvements are presented for the most important techniques used in the reference model, among which are quantization, variable block size, scanning classes, loop filter, entropy coding, multiple vs. single variable-length coding, and block-type discrimination
Keywords :
data compression; encoding; filtering and prediction theory; picture processing; standardisation; teleconferencing; video signals; videotelephony; 2 Mbit/s; 64 kbit/s; CCITT SG XV; block-type discrimination; data compression; entropy coding; loop filter; quantisation; reference model; scanning classes; specialists group on coding for visual telephony; standardisation; variable block size; variable-length coding; video source coding; videoconferencing; videophone; Europe; Hardware; Laboratories; Pulse modulation; Source coding; Standardization; Technical drawing; Telephony; Video codecs; Video coding;
Conference_Titel :
Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE
Conference_Location :
Hollywood, FL
DOI :
10.1109/GLOCOM.1988.25986
